You need to create a facebook page in order for us to provide a link to it. This is due to the privacy settings within facebook groups which prevent us from linking See below from facebook relating to the difference between pages and groups.
So if you create a page then the link will work for you
How are Pages different from groups? Which one should I create?
Pages allow real organizations, businesses, celebrities and brands to communicate broadly with people who like them. Pages may only be created and managed by official representatives.
Groups provide a closed space for small groups of people to communicate about shared interests. Groups can be created by anyone.
Other differences include:
Privacy: Page information and posts are public and generally available to everyone on Facebook.
Audience: Anyone can like a Page to connect with it and get News Feed updates. There is no limit to how many people can like a Page.
Communication: People who help manage a Page can share posts from the Page. Page posts can appear in the News Feeds of people who like the Page. Page owners can also create customized apps for their Page and check Page Insights to track the Page’s growth and activity.
Privacy: In addition to an open setting, more privacy settings are available for groups. In secret and closed groups, posts are only visible to group members.
Audience: You can adjust group privacy to require members to be approved or added by admins. When a group reaches a certain size, some features are limited. The most useful groups tend to be the ones you create with small groups of people you know.
Communication: In groups, members receive notifications by default when any member posts in the group. Group members can participate in chats, upload photos to shared albums, collaborate on group docs and invite members who are friends to group events.
Depending on your needs, you can create a Page or create a group.